Sulfur Tetrafluoride
四氟化硫（SF4），分子量為108.05，熔點為-124℃，沸點為-38℃，是一種選擇性有機氟化劑。四氟化硫為強烈刺激臭味的無色氣體，有毒，在空氣中不燃燒，不爆炸，在600℃時仍很穩定。四氟化硫遇到有水分的環境會引起類似氫氟酸的腐蝕，完全水解變成二氧化硫和氫氟酸，部分水解時生成有毒的亞硫酰氟。SF4在氟化學上是很重要的一種氟代試劑，其能把羥基化合物轉化為單氟代化合物，醛和酮轉化為二氟代化合物，還能把羧基轉化為三氟甲基，是合成三氟甲基化合物的一種重要原料。
Sulfur tetrafluoride(SF4) is a selective organic fluridizer with molecular weight of 108.05, melting point of -124℃ and boiling point of -38℃. Sulfur tetrafluoride is a kind of colorless gas with strong irritating odor, it is toxic but incombustible and inexplosive in the air, it is still very stable even at 600℃. Sulfur tetrafluoride will cause corrosion which is similar to hydrofluoric acid in the environment with moisture, SF4 completely hydrolyzes into sulfur dioxide and hydrofluoric acid and partially hydrolyzes into toxic thionyl chloride.SF4 is an important fluridizer in fluorine chemistry, which can convert hydroxyl compounds into monofluorinated compounds, convert aldehydes and ketones into difluorinated compounds, and convert carboxyl into trifluoromethyl, it is an important raw material for the synthesis of trifluoromethyl compounds.
| 項目Items | 單位Units | 指標Index |
| 四氟化硫Sulfur tetrafluoride（SF4）≥ | Vol.% | 99.0 |
| 六氟化硫Sulfur hexafluoride（SF6）≤ | Vol.% | 0.2 |
| 空氣（Air）≤ | Vol.% | 0.1 |
| 二氧化碳Carbon dioxide（CO2）≤ | Vol.% | 0.05 |
| 四氟化碳Carbon tetrafluoride（CF4）≤ | Vol.% | 0.1 |
| 其他氟硫化合物 Other fluorosulfur compounds（SxFy）≤ | Vol.% | 0.5 |
四氟化硫是具有高效選擇性的氟化劑，廣泛應用于高檔液晶材料和含氟農藥、醫藥及其中間體的合成，還在電子氣、化學氣相淀積、表面處理劑、等離子蝕刻等諸多領域有著重要的應用。
Sulfur tetrafluoride is the most efficient and selective fluridizer, which is widely used in the synthesis of high-grade liquid crystal material, fluorine-containing pesticide, medicine and medical intermediate, sulfur tetrafluoride also is used in many fields such as electronic gas, chemical vapor deposition, surface treatment agent and plasma etching.
四氟化硫充裝于標準無縫鋼質氣瓶中，鋼瓶規格分別為4L、10L。具體包裝規格可根據用戶要求定制更改。四氟化硫儲存于陰涼、通風的庫房，應與氧化劑、食用化學品、堿金屬分開存放，遠離火種、熱源。
Sulfur tetrafluoride is stored in standard seamless cylinders, the packing specifications include 4Land 10L.Specific packaging specifications can be customized according to users’ requirements. Sulfur tetrafluoride shall be stored in a shady and ventilated storeroom, and it should separate from oxidants, chemicals and alkali metals and keep away from fire and heat sources.
